US5016084A - Semiconductor device - Google Patents

Semiconductor device Download PDF

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Publication number
US5016084A
US5016084A US07/503,100 US50310090A US5016084A US 5016084 A US5016084 A US 5016084A US 50310090 A US50310090 A US 50310090A US 5016084 A US5016084 A US 5016084A
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United States
Prior art keywords
bottom wall
edge portion
semiconductor device
insulating film
semiconductor element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/503,100
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English (en)
Inventor
Shin Nakao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
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Publication of US5016084A publication Critical patent/US5016084A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W72/00—Interconnections or connectors in packages
    • H10W72/701—Tape-automated bond [TAB] connectors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0091—Housing specially adapted for small components
    • H05K5/0095—Housing specially adapted for small components hermetically-sealed
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W74/00—Encapsulations, e.g. protective coatings
    • H10W74/10—Encapsulations, e.g. protective coatings characterised by their shape or disposition
    • H10W74/111—Encapsulations, e.g. protective coatings characterised by their shape or disposition the semiconductor body being completely enclosed
    • H10W74/114—Encapsulations, e.g. protective coatings characterised by their shape or disposition the semiconductor body being completely enclosed by a substrate and the encapsulations

Definitions

  • the present invention relates to a semiconductor device, and more particularly to improvements of a package structure of a resin encapsulated-type semiconductor device which is formed by means of a TAB (tape automated bonding) system using a tape carrier.
  • TAB tape automated bonding
  • FIG. 1 is a cross-sectional view illustrating a package structure of a semiconductor device produced by a conventional TAB system.
  • FIG. 2 is a cross-sectional view illustrating the package of the semiconductor device shown in FIG. 1 which has warped after resin encapsulation.
  • a semiconductor element 1 with an electrodes 2 provided thereon is mounted on an electrically conductive cap 5 by means of a first adhering member 7.
  • a lead 4 is connected to the electrode 2.
  • This lead 4 is formed of, for instance, a copper foil having a thickness of 35 ⁇ m and comprises an inner lead portion 4a supported on a support tape 3, which serves an insulating film, and an outer lead portion 4b formed on an outer end portion of the support tape 3 and projecting toward the outside for connection to an external circuit (not shown).
  • the inner lead portion 4a and the outer lead portion 4b are formed by being plated with Au or Sn after the carrier tape is laminated with a copper foil and a lead pattern is formed by photo-etching.
  • the conductive cap 5 is formed by drawing a sheet formed of, for instance, a iron-nickel alloy with a thickness of 0.1 mm and by plating the drawn sheet with Ag.
  • the rear surface of the semiconductor element 1 is adhered to a recess of the conductive cap 5 by means of the first adhering member 7, such as solder or a conductive adhesive.
  • the conductive cap 5 serves as an electrical path therefor, and when the semiconductor device operates, the conductive cap 5 serves as a heat radiating surface.
  • the support tape 3 is supported by a collar 6 of the conductive cap 5 and is formed by stamping out a carrier tape which is similar to the one mentioned above and is formed of a 125 ⁇ m-thick polyimide film used as a cinema film and provided with perforations.
  • the support tape 3 is provided with a through hole 8, and a conductive member 8a formed by plating or the like is disposed in this through hole 8.
  • the collar 6 and the conductive sheet 11 are bonded to each other by means of a second adhering member 10.
  • a bent end portion 12 of the conductive cap 5 facilitates positioning thereof, and when a conductive adhesive is used, the portion 12 prevents the adhesive from leaking out.
  • the conductive cap 5, the semiconductor element 1, connecting portions thereof, etc. are covered with an encapsulating resin 9 such as epoxy resin for the purpose of protection.
  • a conventional semiconductor device is arranged as described above, and in order to assemble this semiconductor device, the carrier tape is first provided with required perforated portions to form the support tape 3. Patterns of the leads 4 and the conductive sheet 11 are formed on the obverse and reverse sides of this support tape 3.
  • the conductive member 8a is disposed in the through hole 8 of the support tape 3, and the connecting pattern of the leads 4 for supplying a rear-surface potential to the semiconductor element 1 is connected to the conductive sheet 11 by means of this conductive member 8a. Furthermore, the tip portion of the inner lead portion 4a is aligned with the electrode 2 of the semiconductor element 1, and the electrode 2 and the inner lead 4a are heated and contact bonded to each other using a bonding tool.
  • solder rings which are used as the first and second adhering members 7, 10 are respectively disposed on the collar 6 and the bottom 5a of the conductive cap 5, or a conductive adhesive is applied thereto.
  • the semiconductor element 1 and the support tape 3 are positioned on the adhering members 7, 10.
  • the solder rings are simultaneously heated and hardened, or portions of the conductive adhesive applied to the parts mentioned above are simultaneously heated and hardened, thereby simultaneously effecting bonding between the conductive cap 5 and the semiconductor element 1 and between the collar 6 and the conductive sheet 11.
  • encapsulation with the encapsulating resin 9 is effected, thereby completing a semiconductor device.
  • the edge portion of the conductive cap is shaped into the form of a collar, the mechanical strength of the edge portion of the conductive cap is weak. Accordingly, there has been a drawback in that, as shown in FIG. 2, the semiconductor device can warp due to the stress resulting from hardening and shrinkage of the encapsulating resin 9, with the result that excessive stress is applied to the semiconductor element 1, which is undesirable for good operation and reliability of the semiconductor device.
  • an object of the present invention is to provide a semiconductor device in which warpage due to the hardening of an encapsulating resin does not occur, thereby overcoming the above-described drawback of the prior art.
  • a semiconductor device comprising: an electrically conductive cap which has a sufficiently thick edge portion for preventing warpage due to the hardening of an encapsulating resin and which is provided with a recess; a semiconductor element placed in the recess of the conductive cap; an insulating film placed on the edge portion; a lead provided on the insulating film and connected to the semiconductor element; and an encapsulating resin for encapsulating an inner surface of the conductive cap, the semiconductor element, the insulating film, the lead, and the like.
  • FIG. 1 is a cross-sectional view illustrating a conventional semiconductor device
  • FIG. 2 is a cross-sectional view illustrating the semiconductor device shown in FIG. 1 which as warped;
  • FIG. 3 is a cross-sectional view of a semiconductor device in accordance with an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a semiconductor device in accordance with another embodiment of the present invention.
  • FIG. 3 is a cross-sectional view illustrating a semiconductor device in accordance with an embodiment of the present invention, in which reference numerals 1 to 4 and 7 to 11 denote the same components as those of the above-described conventional semiconductor device.
  • An electrically conductive cap 5A has a frame-like edge portion 6A having a sufficient thickness for preventing warpage due to the hardening of the encapsulating resin. Also, the conductive cap 5A has a recess 5c in which a semiconductor element 1 is placed. The semiconductor element 1 provided with an electrode 2 is secured in this recess 5c by means of an adhering member 7. A lead 4 is connected to the electrode 2.
  • This lead 4 is formed of, for instance, a copper film having a thickness of 35 ⁇ m, and comprises an inner lead portion 4a supported on a support tape 3, which serves as an insulating film, and an outer lead portion 4b formed on an outer end portion of the support tape 3 and projecting toward the outside for connection to an external circuit (not shown).
  • the conductive cap 5A and the edge portion 6A are formed by drawing a sheet made of, for instance, a iron-nickel alloy and by plating the drawn sheet with Ag.
  • the conductive cap 5A and the edge portion 6A are formed by processing a sheet made of a copper-tungsten alloy or a cobalt-molybdenum clad material, which have high mechanical strength and large heat conductivity, followed by providing the same with Ag or Ni/Au plating.
  • the support tape 3 is provided with a through hole 8, and a conductive member 8a formed by plating or the like is disposed in this through hole 8.
  • a connecting pattern (not shown) of the lead 4 for supplying a rear-surface potential to the semiconductor element 1 is connected to a conductive sheet 11 formed on the rear surface of the support tape 3.
  • the inner surface of the conductive cap 5A, the semiconductor device 1, the support tape 3, the lead 4, and the like are covered with an encapsulating resin 9 such as epoxy resin for the purpose of protection.
  • the semiconductor device which is arranged as described above is assembled in the same manner as that for the above-described conventional device. However, at the time when encapsulation with the encapsulating resin 9 is effected, the support tape 3 and the bottom portion of the conductive cap 5A are clamped and resin encapsulation is carried out to complete the assembly of the semiconductor device.
  • the bottom portion and the edge portion 6A of the conductive cap 5A are formed integrally, in a case where processing is difficult as in the case of a copper-tungsten alloy, an arrangement may be alternatively provided such that, as shown in FIG. 4, after a bottom 5B and an edge portion 6B of the conductive cap 5A are respectively processed independently, the two members may be adhered together by means of a third adhering member 13, such as silver solder.
  • a third adhering member 13 such as silver solder
  • semiconductor element 1 has a thickness transverse to the bottom wall of conductive cap 5 that is less than the corresponding height of edge portion 6A or of 6B transverse to the bottom wall.
  • the heights of the edge portions 6A and 6B are at lest equal to or greater than the thickness of semiconductor element 1 so that no part of element 1 protrudes from the recess to interfere with the application of the encapsulant 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Lead Frames For Integrated Circuits (AREA)
  • Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
  • Wire Bonding (AREA)
US07/503,100 1988-12-08 1990-04-02 Semiconductor device Expired - Fee Related US5016084A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63308806A JPH02155256A (ja) 1988-12-08 1988-12-08 半導体装置
JP63-308806 1988-12-08

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US07310874 Continuation 1989-02-16

Publications (1)

Publication Number Publication Date
US5016084A true US5016084A (en) 1991-05-14

Family

ID=17985536

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/503,100 Expired - Fee Related US5016084A (en) 1988-12-08 1990-04-02 Semiconductor device

Country Status (2)

Country Link
US (1) US5016084A (ja)
JP (1) JPH02155256A (ja)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212405A (en) * 1992-01-08 1993-05-18 Sumitomo Metal Mining Company, Limited Composite lead frame
US5285108A (en) * 1991-06-21 1994-02-08 Compaq Computer Corporation Cooling system for integrated circuits
US5309021A (en) * 1991-10-16 1994-05-03 Mitsubishi Denki Kabushiki Kaisha Semiconductor device having particular power distribution interconnection arrangement
US5324687A (en) * 1992-10-16 1994-06-28 General Electric Company Method for thinning of integrated circuit chips for lightweight packaged electronic systems
US5331203A (en) * 1990-04-05 1994-07-19 General Electric Company High density interconnect structure including a chamber
DE4411210A1 (de) * 1993-04-16 1994-10-20 Microdul Ag Anordnung mit einem Substrat und mindestens einem Chip
US5376588A (en) * 1992-12-10 1994-12-27 Pendse; Rajendra D. Method for making high pin count package for semiconductor device
US5442231A (en) * 1991-10-01 1995-08-15 Mitsubishi Denki Kabushiki Kaisha Semiconductor device
US5521425A (en) * 1990-12-21 1996-05-28 Hewlett-Packard Company Tape automated bonded (TAB) circuit
US5622898A (en) * 1992-12-10 1997-04-22 International Business Machines Corporation Process of making an integrated circuit chip composite including parylene coated wire
US5814882A (en) * 1994-07-20 1998-09-29 Nec Corporation Seal structure for tape carrier package
US5877043A (en) * 1996-02-01 1999-03-02 International Business Machines Corporation Electronic package with strain relief means and method of making
US5998241A (en) * 1997-12-08 1999-12-07 Nec Corporation Semiconductor device and method of manufacturing the same
US5998862A (en) * 1993-03-26 1999-12-07 Sony Corporation Air-packed CCD images package and a mold for manufacturing thereof
US6140695A (en) * 1997-05-15 2000-10-31 Micron Technology, Inc. Compression layer on the leadframe to reduce stress defects
US6252302B1 (en) * 1996-09-19 2001-06-26 Warren M. Farnworth Heat transfer material for an improved die edge contacting socket
US6384333B1 (en) * 1996-05-21 2002-05-07 Micron Technology, Inc. Underfill coating for LOC package
US6800932B2 (en) * 1999-05-27 2004-10-05 Advanced Analogic Technologies, Inc. Package for semiconductor die containing symmetrical lead and heat sink
US6866893B2 (en) * 1999-08-18 2005-03-15 Murata Manufacturing Co., Ltd. Conductive cap, electronic component, and method of forming insulating film of conductive cap
US20080089039A1 (en) * 2004-09-28 2008-04-17 Intraglobal Corporation Method for Micropacking of Electrical or Electrochemical Devices and Micropackage
US9831212B2 (en) * 2013-10-01 2017-11-28 Rohm Co., Ltd. Semiconductor device

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US3911561A (en) * 1972-08-28 1975-10-14 Zyrotron Ind Inc Method of fabricating an array of semiconductor elements
US3942245A (en) * 1971-11-20 1976-03-09 Ferranti Limited Related to the manufacture of lead frames and the mounting of semiconductor devices thereon
JPS54160171A (en) * 1978-06-09 1979-12-18 Hitachi Ltd Package for semiconductor element
JPS5574149A (en) * 1978-11-30 1980-06-04 Seiko Instr & Electronics Ltd Package of semiconductor
JPS55121662A (en) * 1979-03-14 1980-09-18 Matsushita Electric Ind Co Ltd Manufacture of package
US4330790A (en) * 1980-03-24 1982-05-18 National Semiconductor Corporation Tape operated semiconductor device packaging
JPS5885539A (ja) * 1981-11-18 1983-05-21 Hitachi Ltd 電子部品の製造方法
US4392151A (en) * 1979-08-29 1983-07-05 Mitsubishi Denki Kabushiki Kaisha Semiconductor device
JPS6077446A (ja) * 1983-10-04 1985-05-02 Matsushita Electric Works Ltd 封止半導体装置
GB2164794A (en) * 1984-09-17 1986-03-26 Lohja Ab Oy Method for encapsulating semiconductor components mounted on a carrier tape
US4633573A (en) * 1982-10-12 1987-01-06 Aegis, Inc. Microcircuit package and sealing method
US4691225A (en) * 1982-02-05 1987-09-01 Hitachi, Ltd. Semiconductor device and a method of producing the same
US4701999A (en) * 1985-12-17 1987-10-27 Pnc, Inc. Method of making sealed housings containing delicate structures
US4829403A (en) * 1987-01-20 1989-05-09 Harding Ade Yemi S K Packaging arrangement for energy dissipating devices

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JPS579498B2 (ja) * 1973-12-19 1982-02-22
JPS523275A (en) * 1975-06-24 1977-01-11 Nec Home Electronics Ltd Lighting system of a discharge lamp

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US3942245A (en) * 1971-11-20 1976-03-09 Ferranti Limited Related to the manufacture of lead frames and the mounting of semiconductor devices thereon
US3911561A (en) * 1972-08-28 1975-10-14 Zyrotron Ind Inc Method of fabricating an array of semiconductor elements
JPS54160171A (en) * 1978-06-09 1979-12-18 Hitachi Ltd Package for semiconductor element
JPS5574149A (en) * 1978-11-30 1980-06-04 Seiko Instr & Electronics Ltd Package of semiconductor
JPS55121662A (en) * 1979-03-14 1980-09-18 Matsushita Electric Ind Co Ltd Manufacture of package
US4392151A (en) * 1979-08-29 1983-07-05 Mitsubishi Denki Kabushiki Kaisha Semiconductor device
US4330790A (en) * 1980-03-24 1982-05-18 National Semiconductor Corporation Tape operated semiconductor device packaging
JPS5885539A (ja) * 1981-11-18 1983-05-21 Hitachi Ltd 電子部品の製造方法
US4691225A (en) * 1982-02-05 1987-09-01 Hitachi, Ltd. Semiconductor device and a method of producing the same
US4633573A (en) * 1982-10-12 1987-01-06 Aegis, Inc. Microcircuit package and sealing method
JPS6077446A (ja) * 1983-10-04 1985-05-02 Matsushita Electric Works Ltd 封止半導体装置
GB2164794A (en) * 1984-09-17 1986-03-26 Lohja Ab Oy Method for encapsulating semiconductor components mounted on a carrier tape
US4701999A (en) * 1985-12-17 1987-10-27 Pnc, Inc. Method of making sealed housings containing delicate structures
US4829403A (en) * 1987-01-20 1989-05-09 Harding Ade Yemi S K Packaging arrangement for energy dissipating devices

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Michael Lancaster, Tape Automated . . . Density , Nepcon West, 1987, pp. 503 515. *
Thomas A. Scharr, "Tab Bonding . . . Die", ISHM, 1983, pp. 561-565.
Thomas A. Scharr, Tab Bonding . . . Die , ISHM, 1983, pp. 561 565. *

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331203A (en) * 1990-04-05 1994-07-19 General Electric Company High density interconnect structure including a chamber
US5521425A (en) * 1990-12-21 1996-05-28 Hewlett-Packard Company Tape automated bonded (TAB) circuit
US5285108A (en) * 1991-06-21 1994-02-08 Compaq Computer Corporation Cooling system for integrated circuits
US5442231A (en) * 1991-10-01 1995-08-15 Mitsubishi Denki Kabushiki Kaisha Semiconductor device
US5309021A (en) * 1991-10-16 1994-05-03 Mitsubishi Denki Kabushiki Kaisha Semiconductor device having particular power distribution interconnection arrangement
US5212405A (en) * 1992-01-08 1993-05-18 Sumitomo Metal Mining Company, Limited Composite lead frame
US5324687A (en) * 1992-10-16 1994-06-28 General Electric Company Method for thinning of integrated circuit chips for lightweight packaged electronic systems
US5824568A (en) * 1992-12-10 1998-10-20 International Business Machines Corporation Process of making an integrated circuit chip composite
US5376588A (en) * 1992-12-10 1994-12-27 Pendse; Rajendra D. Method for making high pin count package for semiconductor device
US5468994A (en) * 1992-12-10 1995-11-21 Hewlett-Packard Company High pin count package for semiconductor device
US5622898A (en) * 1992-12-10 1997-04-22 International Business Machines Corporation Process of making an integrated circuit chip composite including parylene coated wire
US5998862A (en) * 1993-03-26 1999-12-07 Sony Corporation Air-packed CCD images package and a mold for manufacturing thereof
DE4411210A1 (de) * 1993-04-16 1994-10-20 Microdul Ag Anordnung mit einem Substrat und mindestens einem Chip
US5814882A (en) * 1994-07-20 1998-09-29 Nec Corporation Seal structure for tape carrier package
US5877043A (en) * 1996-02-01 1999-03-02 International Business Machines Corporation Electronic package with strain relief means and method of making
US6384333B1 (en) * 1996-05-21 2002-05-07 Micron Technology, Inc. Underfill coating for LOC package
US6670550B2 (en) 1996-05-21 2003-12-30 Micron Technology, Inc. Underfill coating for LOC package
US6538200B2 (en) 1996-05-21 2003-03-25 Micron Technology, Inc. Underfill coating for LOC package
US6892453B2 (en) 1996-09-19 2005-05-17 Micron Technology, Inc. Method for forming an encapsulation device
US6578262B2 (en) 1996-09-19 2003-06-17 Micron Technology, Inc. Heat transfer material for an improved die edge contacting socket
US6735860B2 (en) 1996-09-19 2004-05-18 Micron Technology, Inc. Heat transfer material for an improved die edge contacting socket
US6252302B1 (en) * 1996-09-19 2001-06-26 Warren M. Farnworth Heat transfer material for an improved die edge contacting socket
US6446334B2 (en) 1996-09-19 2002-09-10 Micron Technology, Inc. Heat transfer material for an improved die edge contacting socket
US6140695A (en) * 1997-05-15 2000-10-31 Micron Technology, Inc. Compression layer on the leadframe to reduce stress defects
US6657288B2 (en) 1997-05-15 2003-12-02 Micron Technology, Inc. Compression layer on the lead frame to reduce stress defects
US6486539B1 (en) 1997-05-15 2002-11-26 Micron Technology, Inc. Compression layer on the leadframe to reduce stress defects
US6221695B1 (en) * 1997-05-15 2001-04-24 Micron Technology, Inc. Method for fabricating a compression layer on the dead frame to reduce stress defects
US5998241A (en) * 1997-12-08 1999-12-07 Nec Corporation Semiconductor device and method of manufacturing the same
US6800932B2 (en) * 1999-05-27 2004-10-05 Advanced Analogic Technologies, Inc. Package for semiconductor die containing symmetrical lead and heat sink
US6866893B2 (en) * 1999-08-18 2005-03-15 Murata Manufacturing Co., Ltd. Conductive cap, electronic component, and method of forming insulating film of conductive cap
US20080089039A1 (en) * 2004-09-28 2008-04-17 Intraglobal Corporation Method for Micropacking of Electrical or Electrochemical Devices and Micropackage
US9831212B2 (en) * 2013-10-01 2017-11-28 Rohm Co., Ltd. Semiconductor device
US10109611B2 (en) * 2013-10-01 2018-10-23 Rohm Co., Ltd. Semiconductor device

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